Service manual

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LA600 MultiPrinter

Field Service Manual

Order No.: ER-LA600-SV

The information in this document is subject to change without notice and should not be construed as a

commitment by Digital Equipment Corporation. Digital Equipment Corporation assumes no

responsibility for any errors that may appear in this document.

All rights strictly reserved. Reproduction or issue to third parties in any form is not permitted without

written authorization from the publisher.

Pub. No. 5112 991 12933

November 1998

Summary of content (62 pages)

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LA600 MultiPrinter Field Service Manual The information in this document is subject to change without notice and should not be construed as a commitment by Digital Equipment Corporation. Digital Equipment Corporation assumes no responsibility for any errors that may appear in this document. Copyright © by Digital Equipment Corporation 1998. All rights strictly reserved. Reproduction or issue to third parties in any form is not permitted without written authorization from the publisher. Order No.
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Table of Contents Table of Contents 5. Printer Subassemblies . . . . . . . 5.1 Basic Elements of the Printer 5.2 Main Subassemblies . . . . . . . 5.3 Internal Wiring Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 5-1 5-2 5-3 6.
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Table of Contents 7. Procedures for Removal and Reassembly of Spare Parts Housing 405 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Top Cover LA600 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Top Cover 405 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front Cover 405 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front Insertion 405 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Introduction 1. Introduction proper handling of the wearing parts of the printer. 9 The manual is divided into the following chapters: 1 Introduction This chapter gives an overview about the manual and some basic informations. 2 Safety Precautions This chapter contains all the important instructions a service technician should obey during a service action. 3 Keeping the Printer Running This chapter instructs the user about preventive meassures for troublefree operation of the printer.
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2. Safety Precautions S Some of the maintenance procedures described in this section require that the printers top housing is removed. This exposes the internal working parts of the printer. During operating touching some of these parts may be potentially dangerous. S All replacement and cleaning procedures should be performed with the printer switched OFF and the mains connector disconnected. S Only recommended parts should be used to replace defective parts.
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Keeping the Printer Running 3. Keeping the Printer Running ASF 1) Paper insertion problems 3.1 Basic Rules S Never print over the area of pin holes nor the edges of the fanfold paper. Otherwise the print head can be damaged. S Never print with no papaer loaded or no ribbon cartridge is installed in the printer. Remove ASF cassette.
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Keeping the Printer Running PRINT TEST3 3.2.2 Cleaning Procedure CONFIGURATION PM1 SPC MCR NFQ TNA1 PTC1 PHCS2 208xxxxx 2080740x 0 1800 230 2.75 1.00 1. Power the printer ON and remove the top cover. PM2 MC DSF TNA2 PTC2 PGC C020 DEC NCR SETS C023 DEC TECHNICAL Note: Keeping the Printer Running 00000000 00000000 100 260 2.85 30 PM3 CUR 208079xx 4 GSF TNA3 PTDT PGCNT C021 DEC SUPPLEMENT C024 DEC 7 HEBREW 70 260 5 25 PBC PMR NTF CAC PHCS1 SBP 20807xxx 0 240 3.10 2.
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Keeping the Printer Running 3.3 Status and Error Messages TEAR OFF PAPER Displayed when a switch has been initiated from currently tractor to a different paper source and the fanfold paper could not retreat into the parking position. The operator must "tear off" the paper along the tear off edge which is located directly above the fanfold paper output (paper should be torn off from left to right).
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Keeping the Printer Running Display That means... Cause / Action HOR.
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Specific Printer Functions 4. Specific Printer Functions 4.1 4.1.2 AGC Procedure Print Gap Adjustment Selected AGC Position 4.1.1 Principle The print head carriage is mounted on two parallel guide rails which provide for a precise movement over the whole print range in horizontal direction. The lower rail is built up as an excentric shaft. The excentre arrangement is driven by a stepper motor (AGC-Motor).
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Specific Printer Functions 4.1.3 AGC Adjust Specific Printer Functions 4.1.4 Automatic Gap Control (AGC) Shuttle Base Position No Form inserted !! Shuttle Base Position Mechanical Stop Mechanical Stop Positioning Shuttling Process Shuttling Process Positioning Form Platen Assy Print Head Protection Shield S S S S S Platen Assy Print Head Ribbon Print Gap The print head/carriage is positioned at the AGC Position The AGC procedure is started.
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Specific Printer Functions 4.1.5 Programmed Copy Control (PCC) 4.2 Shuttle Base Position Form Specific Printer Functions Print Head - Tilting Principle and related Print Speed Mechanical Stop Positioning Process Platen Assy Print Head Ribbon Print Gap Platen Gap Adjust (-3 ... +4) PCC: 1 2 3 4 5 Inclination Position for LQ mode Protection Shield no print position 6 Inclination Position for DATA or NLQ mode S The print gap is set according to the value commanded by the PCC command.
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Specific Printer Functions 4.2.1 Printing Speed in DATA mode Specific Printer Functions 3) 4.2.3 Printing Speed in LQ mode 1 Inclination Position of the Print Head Lug Needle frequency Inclination Position of the Print Head Lug 1.800 Hz Needle frequency 1.
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Specific Printer Functions 4.3 Positioning System - Horizontal Positioner Specific Printer Functions 4.4 Paper Run / Paper In Control The printer is equipped with a combined paper run/in feature realized by the sensor as depicted below.
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Specific Printer Functions 4.5 Paper Path Cut Sheet Ouput Continuous Form Output Automatic Sheet Feeding Paper Sensor Manual Input Continuous Form Input 4.7.
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Printer Subassemblies 5. Printer Subassemblies 5.2 Main Subassemblies The main subassemblies are: S Mechanical Subassembly (A) 5.
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Printer Subassemblies 5.
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Troubleshooting and Diagnostics 6 Troubleshooting and Diagnostics 6.1 S S Power indicator does not come On when power is switched On Check that the power cord and plug are securely fitted to the printer and to an electrical outlet. Ask for the power connector connections (and fuse, if fitted) to be verified. Ask for the building electrical supply to be verified. S S How to Use This Section 1. Find the category in which your problem occurs.
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Troubleshooting and Diagnostics Display That means ... Cause / Action NV RAM OK Error on the RAM of the Control Unit - Control Unit defective RAM OK Checksum error - (P)ROM defective ROM 1 OK No Fonts available - Character generator P(ROM) on PM damaged or missing ROM 2 OK IC damaged - IC on 3.
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Troubleshooting and Diagnostics FRAMING ERROR 6.3 Protocol error Troubleshooting and Diagnostics 6.4 - Check protocol setting of printer and host - Repeat data transfer S Paper is not positioned at perforation for tear-off feature S Select the correct form length using the Set-up feature. S Reset top of form by performing a Parking function. S Refer to User´s Manual section 3.
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Troubleshooting and Diagnostics 6.5 S Print-related Problems Troubleshooting and Diagnostics If the printout or the character set is not ok, the following procedure can help to clear the situation. Print faint or of poor quality. S Have you used the correct paper? See User´s Manual Chapter 7 Technical Data which contains a full specification of the paper you can use. Replace the paper if it does not match the specification. S Make sure that the ribbon is stretched correctly.
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Troubleshooting and Diagnostics 6.6 Ribbon or Carriage-related Problems S Ribbon Problems S Make sure that the ribbon is: S Stretched correctly S Not worn thin or dry S Not torn or damaged in any other way S Not jammed S Carriage does not move smoothly S Examine the paper pathway. Remove any obstructions. Check that all packing material is removed. S Examine the carriage area for obstructions. Remove where necessary. 6.
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7. Procedures for Removal and Reassembly This chapter describes the removal procedures which are necessary for proper handling of the spare parts and subunits of the printer. For detailed order information and description of the spare parts please refer to the Spare Part Catalog (5112 991 1030x). Note: All removal procedures consists of several steps indicated with a: " to show preparation and Y 1 7-2 M to indicate the main removal steps.
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5112 991 10786 DEC Field Service Instruction Part: Housing 405 (1) Part: Top Cover LA600 (2) Part: Top Cover 40A (2) (PP 405) Part: Front Cover 405 (3) Part: Front Insertion 405 (4) Part: Stacker Support 405 (5) Part No.: 5112 292 3840x DEC P/N.: FD-W03RF-01 Part No.: 5112 292 6826x DEC P/N.: 29-31800-01 Part No.: 5112 292 6827x DEC P/N.: FD-W03RH-01 Part No.: 5112 212 5490x DEC P/N.: FD-W03RC-01 Part No.: 5112 292 3842x DEC P/N.: FD-W03RJ-01 Part No.: 5112 212 5500x DEC P/N.
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5112 991 13242 DEC Field Service Instruction 7 3 Part: Print Engine LA600 Part No.: 5112 292 6475x DEC P/N.
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5112 991 10415 DEC Field Service Instruction Part: PSU-40A Part: PSU-40D Part: PSU-40DS Part No.: 5112 292 3811x DEC P/N.: FD-W028Y-01-A01 Part No.: 5112 292 7627x DEC P/N.: FD-W028Y-01-A02 Part No.: 5112 292 7628x DEC P/N.: n. a.
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5112 991 12902 DEC Field Service Instruction Part: DEV-40AE Part: DEV-40A (PP 405) *) Part: DEV-40LA600 *) Part No.: 5112 292 7159x DEC P/N.: 29-31791-01-A02 Part No.: 5112 292 3810x DEC P/N.: FD-W00CS-01 Part No.: 5112 292 6292x DEC P/N.
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5112 991 16261 DEC Field Service Instruction 3 Part: Part: CU-40K (repair only) (With Memory Card interface) CU-40LA600 (repair only) (With Memory Card interface) Part No.: 5112 292 3885x DEC P/N.:FD-W00CW-01 Part No.: 5112 292 6299x DEC P/N.
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5112 991 16262 DEC Field Service Instruction Part: Print CU-40L (Without Memory Card interface) 2 Part No.: 5112 292 7383x DEC P/N.: 29-31792-01-A2 REMOVAL " Disconnect mains cable " Remove all encasing parts (see Part: Housing) " Remove DEV-40 (see Part: DEV-40AE) Y M Remove the Personality Module after loosening the two lockscrews (1) Y M Disconnect plug (2) from CU-40 and remove CU-40 Y M Remove the EEPROM CU 40X (3) and plug it into the new CU-40 L.
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5112 991 11244 DEC Field Service Instruction 2 Part: EEPROM CU-405 Part No.: 5112 000 4164x DEC P/N.
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5112 991 10494 DEC Field Service Instruction Part: Operator Panel 40B Part No.: 5112 292 6418x DEC P/N.
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5112 991 10713 DEC Field Service Instruction Part: Power Switch 40A Part No.: 5112 292 3882x DEC P/N.: FD-W02H3-01 1 REMOVAL " Disconnect mains cable " Remove all encasing parts (see Part: Housing) Y " M Loosen the two screws (1) Remove PSU-40x (see Part: PSU-40) Y M Remove the power switch REASSEMBLING " Execute the REMOVAL procedure in reverse sequence.
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5112 991 10655 DEC Field Service Instruction 1 3 Part: Print Head Cable 405 4 2 6 Part No.: 5112 292 3880x DEC P/N.
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5112 991 10503 DEC Field Service Instruction Part: Encoder Strip 2 Part No.: 5112 292 7454x DEC P/N.
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5112 991 12393 DEC Field Service Instruction 3 Part: Kit Lubrication Felt Part No.:5112 212 5589x DEC P/N.: 29-31804-01 REMOVAL 2 " Disconnect mains cable " Remove all encasing parts (see Part: Housing) " Remove Encoder Strip (1) (see Part: Encoder Strip) " Remove operator panel, but leave the interface cable connected (see Part: Operator Panel) Y M Remove srew (2) on both sides of the upper guide rail (3) Y M Remove the upper guide rail (3) Y M Exchange the lubrication felt (4).
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5112 991 10723 REASSEMBLING " Execute the REMOVAL procedure in reverse sequence Note: Pay attention that the logic cable is fixed correctly by clamp (10) DEC Field Service Instruction 2 Part: Print H-Encoder Part No.: 5112 292 4310x DEC P/N.
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5112 991 10573 DEC Field Service Instruction Part: H-Motor Part No.: 5112 292 3791x DEC P/N.
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5112 991 10514 DEC Field Service Instruction Left hand side 1 Part: Carriage Right hand side 2 Part No.: 5112 292 4094x DEC P/N.
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5112 991 10526 DEC Field Service Instruction Part: Protection Shield Part No.:5112 292 3839x DEC P/N.:FD-W041W-01 1 REMOVAL " Disconnect mains cable 3 " Open top cover " Remove Ink Ribbon " Remove Platen (4) Y M 2 Disconnect protection shield (1) by loosening the two screws (2).
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5112 991 10565 DEC Field Service Instruction 6 Part: Ribbon Gear 1 Part No.: 5112 292 6384x DEC P/N.
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5112 991 10583 DEC Field Service Instruction Stepper Motor 7.5 DEG (Platen gap control) Part: Part No.: 5112 292 4106x DEC P/N.: FD-W0394-01 REMOVAL 1 " Disconnect mains cable " Remove all encasing parts (see Part: Housing) " Remove DEV-40A (see Part: DEV-40) Y M Disconnect the four pin motor cables from the motors plug Y M Remove the two screws (1) fixation of the stepper motor Warning: Y M 2 Do not loosen the screw (2).
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5112 991 13501 DEC Field Service Instruction Stepper Motor 1.8 DEG Part: (Vertical Paper Transport) Part No.: 5112 292 6241x DEC P/N.
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5112 991 10603 DEC Field Service Instruction 1 Tractor Gear Part: Part No.: 5112 292 3803x DEC P/N.: FD-W045N-01 2 REMOVAL " Disconnect mains cable " Remove all encasing parts (see Part: Housing) " Remove DEV-40 (see Part: DEV-40) Y Y M 4 5 The paper path for output must be set to tractor.
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5112 991 11952 DEC Field Service Instruction Stacker Elements Part: Part No.: 5112 292 4099x DEC P/N.
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5112 991 10628 DEC Field Service Instruction Paper Sensor Part: Part No.: 5112 292 3805x DEC P/N.: FD-W04JJ-01 REMOVAL " Disconnect mains cable " Remove all encasing parts (see Part: Housing) Y M Remove circlip (1) and bearing (2).
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5112 991 12402 DEC Field Service Instruction Kit Pressure Rolls Part: Part No: 5112 292 6655x DEC P/N.
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5112 991 10732 DEC Field Service Instruction Part: Kit V-Transport Part: Belt Stepper Part: Belt Form Feed Part No.: 5112 292 3845x DEC P/N.. FD-W02M6-01 Part No.: 5112 200 0878x DEC P/N.: FD-W032Y-01 Part No.: 5112 200 0879x DEC P/N.
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5112 991 12003 DEC Field Service Instruction Kit Belt Pulley 2 Part: Part No.: 5112 292 7442x DEC P/N.
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5112 991 10742 DEC Field Service Instruction Kit Cont. Forms Exit Part: 6 Part No.: 5112 292 3846x DEC P/N.: FD-W02M7-01 REMOVAL " Disconnect mains cable " Remove all encasing parts (see Part: Housing) " Remove DEV-40 (see Part: DEV-40) " Remove stacker elements (see Part:Stacker Elements) 5 Y M Locate the gearwheel (1), remove the circlip (2) and the washer (3), remove gearwheel (1) and bearing (4) from the wheel shaft Y M Remove circlip (5) from the wheel shaft and move it to the left.
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5112 991 10752 DEC Field Service Instruction Kit Tractor 2 Part: Part No.: 5112 292 7441x DEC P/N.
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12 991 10761 DEC Field Service Instruction Kit H-Drive Belt Part: Part No.: 5112 292 3848x DEC P/N.: FD-W02M5-01 1 REMOVAL " Disconnect mains cable " Remove all encasing parts (see Part: Housing) " Remove the print head Y M Disengage the drive belt (1) from the drive wheel horizontal motor by pressing the belt tension elements on pos.
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5112 991 15071 2 DEC Field Service Instruction Part: Kit ASF Lever 2 Part No.: 5112 292 6875x DEC P/N.: FD-W0487-01 1 1 REMOVAL of the Force Adjustment Levers (Figure 2) " Remove the ASF-Cassette from the printer and remove any paper loaded, and the paper support (if mounted). Y M Remove the lever-side cover of the ASF Cassette by releasing of the four snaplocks (No. 1 - 4 in figure 1). Use a flat screw driver to do so and keep the sequence of figure 1. Y M Remove the circlip (No.
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5112 991 12351 DEC Field Service Instruction Kit Spring D-Axis Part: Part No.: 5112 292 4107x DEC P/N.
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5112 991 13021 DEC Field Service Instruction Part: Kit Screws and Springs Part No.: 5112 292 3849x DEC P/N.: FD-W05RK-01 24 22 Location of Screws and Springs 13 15 14 18 20 12 21 14 17 16 23 25 19 11 26 11 12 13 14 15 Spring 0.6x4x23 ST F. Paper Run Spring 0.3x4.
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5112 991 14621 DEC Field Service Instruction Part: Noise Absorber Part No.: 5112 212 7043x DEC P/N.
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5112 991 15321 Field Service Instruction Rep Kit ASF-Cassette Part: 1 Part No.: 5112 292 7235X DEC P/N.: ____________ REMOVAL 2 3 " Remove the ASF-Cassette from the printer. Remove any paper loaded and the paper support (if mounted). Y M Remove the cover (1) of the ASF-Cassette by releasing the snaplocks (2). Use a flat screw driver to do so. Y M Release the connector (3) out of the cover (1). Y M Pull back the retaining parts (5) and remove the shaft (4).
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8 Wearing Parts This chapter describes the removal procedures which are necessary for proper handling of the wearing parts of the printer. Note: All removal procedures consists of several steps indicated with a: " to show preparation and YM to indicate the main removal steps.
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Installing the new print head (5) Ensure that the printer is switched OFF. For print head installation, the carriage should be aligned with the cut-out on the paper guide plate (green insert). (Same position as for Removal procedure). DEC Field Service Instruction Print Head DH3024/2 Part: Part No.: 5112 292 6652x DEC P/N.: FD-52920-01 Y M Hold the print head (5) in its mounting position and press it against its stop in direction of the platen.
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5112 991 10352 To install the Platen Assy (2) DEC Field Service Instruction Part: Platen Assembly Part No.: 5112 292 3801x DEC P/N.: LA60X-PN To Remove the Platen (2) " " " " Y Y Y Y Switch the printer OFF. Lift and remove the output stacker. Lift and remove the top cover. Remove the Ribbon cassette. M Position the print head to the very right. M Release the plastic platen clamp (1) on the left platen mounting.
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5112 991 10361 To install the Pick-up Rollers (62) DEC Field Service Instruction Y Part: ASF Pick-up Rollers Part No.: 5112 292 4100x DEC P/N.: LA60X-PR To Remove the ASF Pick-up Rollers (62) Y M Remove the ASF cassette (30) from the printer by drawing back the release lever (63), releasing the mounting lugs. Y M Remove the small access cover (64) by squeezing it together as shown. Y M Pull back the retainers (66) as shown and lift up the bar (65).
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List of Spares and Repairs 9 List of Spares and Repairs Item 9.1 List of Spare Parts Item Part No. DEC P/N.
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List of Spares and Repairs Item Part No. DEC P/N. Page Part No. DEC P/N. Print Head DH3024 / 2 5112 292 6652x FD-52920-01 8-2 Platen Assy 5112 292 3801x LA60X-PN 8-4 Pick-up Rolls ASF A and B 5112 292 4100x LA60X-PR 8-6 9.